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Test SOAP Client and REST Service in WSO2 ESB

Wso2 ESB can convert anything to anything. Today I'm going to explain the below scenario.

Scenario :- 

1. Soap client send a request to ESB with soap header.

2. ESB remove soap header and invoke the REST service which only accept XML format.

3. REST service generate a response in xml format

4. ESB adding soap headers to response and send back to SOAP client.




As an example REST service, I'm going to use jaxrs_basic service in WSO2 Application server. Download wso2 application server from this link


Step 1 :-
           Change the offset value in carbon.xml file which is located in <AS_HOME>/repository/conf directory.

     
          If you started WSO2 ESB in offset "0" set offset in application server as "1"
  <Offset>1</Offset>
   
           Start wso2 application server

Step 2 :-

           Start ESB (make sure you do not have same offset value in both ESB and Application Server)

           Go to the management console and add a custom proxy service in WSO2 ESB.


<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="CustomerServiceProxy"
       transports="https,http"
       statistics="disable"
       trace="disable"
       startOnLoad="true">
   <target>
      <inSequence>
         <filter xpath="//getCustomer">
            <property name="REST_URL_POSTFIX"
                      expression="//getCustomer/id"
                      scope="axis2"
                      type="STRING"/>
            <property name="HTTP_METHOD" value="GET" scope="axis2" type="STRING"/>
         </filter>
         <send>
            <endpoint>
               <address uri="http://localhost:9764/jaxrs_basic/services/customers/customerservice/customers"
                        format="pox"/>
            </endpoint>
         </send>
      </inSequence>
      <outSequence>
         <property name="messageType" value="text/xml" scope="axis2"/>
         <send/>
      </outSequence>
   </target>
   <description/>
</proxy>



Step 3 :-

      Create a soap ui project for CustomerServiceProxy with the endpoint url defined in Service dashboard(as shown in below screenshot)




According to my setup, this is the endpoint url

https://madura:8243/services/CustomerServiceProxy


 Step 4 :-

Send the below sample soap request using soap ui.


<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soapenv:Header/> 
   <soapenv:Body>
     <getCustomer>
        <id>123</id>
     </getCustomer>
   </soapenv:Body>
</soapenv:Envelope>


You will get the soap response as show in below screenshot.






Response with soap headers


<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soapenv:Body>
      <Customer>
         <id>123</id>
         <name>John</name>
      </Customer>
   </soapenv:Body>
</soapenv:Envelope>


Note :- I'm sending a rest resource request in the 2nd step. If you want to send only xml request, Please remove filter tags and send it in POST method.


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